US3825711A - Electrical switch - Google Patents

Electrical switch Download PDF

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Publication number
US3825711A
US3825711A US00344552A US34455273A US3825711A US 3825711 A US3825711 A US 3825711A US 00344552 A US00344552 A US 00344552A US 34455273 A US34455273 A US 34455273A US 3825711 A US3825711 A US 3825711A
Authority
US
United States
Prior art keywords
fixed contacts
carrier
further fixed
contact
electrical switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00344552A
Other languages
English (en)
Inventor
K Lewis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lucas Electrical Co Ltd
Original Assignee
Lucas Electrical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to GB1385672A priority Critical patent/GB1418662A/en
Priority to DE19732314438 priority patent/DE2314438A1/de
Priority to JP3399773A priority patent/JPS557644B2/ja
Application filed by Lucas Electrical Co Ltd filed Critical Lucas Electrical Co Ltd
Priority to US00344552A priority patent/US3825711A/en
Priority to FR7310708A priority patent/FR2177961B1/fr
Application granted granted Critical
Publication of US3825711A publication Critical patent/US3825711A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/12—Movable parts; Contacts mounted thereon
    • H01H23/16—Driving mechanisms
    • H01H23/168—Driving mechanisms using cams
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H23/00—Tumbler or rocker switches, i.e. switches characterised by being operated by rocking an operating member in the form of a rocker button
    • H01H23/02—Details
    • H01H23/08—Bases; Stationary contacts mounted thereon

Definitions

  • An electrical switch comprises a plurality of fixed 73 Assignee; The Lucas Electrical Company contacts and a movable contact mounted on a carrier. Limited, Birmingham England There is providteld an operating member which effects movement of t e carrier between a irst osition in [22] Fled: 1973 which the movable contact electrically int rconnects [21] L 344,552 the fixed contacts and a second position in which-the movable contact is spaced from the fixed contacts. 52 U.S. Cl. 200/67 G The Switch alsoiiiicludes further fixed contacts which [511 int.
  • the carrier includes .a projection which, when the carrier is in its other position, engages the T V A 'f I resilient member, and urges it out of connection with FQREIGN PATENTS 0R APPLICATIONS the second of the further fixed co ntacts an d into elec- 803,314 10/1958 Great Britain 200/67 G Primary Examiner-RoyN. Envall, Jr. Attorney, Agent, or Firm-Holman & Stern trical. connection with a third of the further fixed.
  • an electrical switch comprising a plurality of fixed contacts, a movable contact mounted on a carrier, an operating member for effecting movement of the carrier between a first position in which the movable contact electrically interconnects the fixed contacts and a second position in which the movable contact is spaced from the fixed contacts, a set of further fixed contacts, a resilient, conductingmember connected to a first of the further fixed contacts and biassed to be connected electrically with a second of the further fixed contacts when the carrier is in one of its two positions, andmeans on the carrier, when in its other position, for urging the resilient member out of electrical connection with the second of the first fixed contacts and into electrical connection with a third of the further fixed contacts.
  • means are provided for limiting the contact pressure between the resilient member and the third of the further fixed contacts.
  • Such means may be provided by a projection on the carrier which engages against a stop when the carrier is in its said other position.
  • the said other position of the carrier is the aforementioned second position of the carrier.
  • a conducting blade spaced at one end fromthe third of the further fixed contacts and'attached to the'second of the further fixed contacts en gages the resilient member when the latter is in its biassed position so as to provide the electrical connection between the resilient member and the second of the further fixed contacts.
  • FIG. 1 is a cut-away sectional view of part of an electrical switch according to the present invention
  • FIG. 2 is a plan view of part of the switch shown in FIG. 1, in which the fixed contact layout is illustrated.
  • the electrical switch com- Referring to the drawing, the electrical switch com-.
  • a carrier 11 is mounted on the pivot portions 10 so as to be pivotal relative thereto and has on its undersurface a contact blade 12 which extends between a portion of the carrier adjacent the pivot portions 10 and a location at which it can engage fixed contacts 2 and 3. In the position shown in FIG. 1, the contact carrier 11 is in a first position in which the contact blade 12 provides electrical connection between all of the fixed contacts 2, 3, 4 and 5.
  • the carrier 11 is provided with a pivot projection 13 disposed adjacent a pivot surface 14 on the body 1.
  • a pivotal operating member 15 engages the carrier 11 and can be manually moved over the surface of carrier 11 to effect movement of the latter away from its first position to a second position in which the carrier 11 has pivoted about pivot projection 13 on pivot Surface 14. In the second position of the carrier 11, it is no longer resting on pivot portions 10 so that the contact blade 12 is no longer in contact with the pivot portions 12 or with the fixed contacts 2 and 3. It is to be appreciated that the pivot projection 13 is not in contact with the pivot surface 14 but is spaced slightly above the latter when the carrier is in its first position.
  • Attached to fixed contact 7 is one arm of an L- shaped conducting blade 18 whose other arm terminates in a contact 19 which is spaced vertically above fixed contact 8.
  • An electrically conducting blade spring .20 is secured to fixed contact 6 and has a movable contact portion 21 which is resiliently biassed into a position in which it is in electrical engagement with contact 19.
  • the fixed contact 6 is normally in electrical connection with fixed contact 7 through blade spring 20 and conducting blade 18.
  • the further projection 17 on the carrier 11 engages the blade spring 20 and urges the contact 21 thereon away from contact 19 and into electrical connection with fixed contact 8.
  • the projection 16 on the carrier 11 moves towards fixed. contact 7 and abuts thereagainst so asto limit the amount by which the contact carrier. 11 can be pivoted. In this manner, the contact pressure between contact 21 and fixed contact 8 is limited, thereby preventing the blade spring 20 from being overstressed.
  • the contact carrier 11 is moulded from a synthetic plastics material and therefore there is no risk of short circuiting occurring when projection 16 abuts fixed contact 7 or when the further projection 17 engages the blade spring 20.
  • An electrical switch comprising a plurality of fixed contacts, a movable contact mounted on a carrier, an
  • a. set of further fixed contacts a resilient, conducting member connected to a first of the further fixed contacts and biassed to be connected electrically with a second of the further fixed contacts when the carrier is in one of its two posi tions, and means on the carrier, when in its other position, for urging the resilient member out of electrical connection with the second of the further fixed contacts and into electrical connection with a third of the further fixed contacts.
  • a conducting blade spaced at one end from the third of the further fixed contacts and attached to the second of the further fixed contacts engages the resilient member when the latter is in its biassed position so as to provide the electrical connection between the resilient member and the second of the further fixed contacts.

Landscapes

  • Mechanisms For Operating Contacts (AREA)
  • Tumbler Switches (AREA)
  • Contacts (AREA)
  • Slide Switches (AREA)
  • Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
  • Push-Button Switches (AREA)
US00344552A 1972-03-24 1973-03-26 Electrical switch Expired - Lifetime US3825711A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB1385672A GB1418662A (en) 1972-03-24 1972-03-24 Electrical switch
DE19732314438 DE2314438A1 (de) 1972-03-24 1973-03-23 Elektrischer schalter
JP3399773A JPS557644B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-03-24 1973-03-24
US00344552A US3825711A (en) 1972-03-24 1973-03-26 Electrical switch
FR7310708A FR2177961B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-03-24 1973-03-26

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB1385672A GB1418662A (en) 1972-03-24 1972-03-24 Electrical switch
US00344552A US3825711A (en) 1972-03-24 1973-03-26 Electrical switch

Publications (1)

Publication Number Publication Date
US3825711A true US3825711A (en) 1974-07-23

Family

ID=26250057

Family Applications (1)

Application Number Title Priority Date Filing Date
US00344552A Expired - Lifetime US3825711A (en) 1972-03-24 1973-03-26 Electrical switch

Country Status (5)

Country Link
US (1) US3825711A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS557644B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2314438A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2177961B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1418662A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022999A (en) * 1975-10-07 1977-05-10 Cutler-Hammer, Inc. Plural-circuit progressive switch

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5381423A (en) * 1976-12-13 1978-07-18 Furukawa Metals Co Copper scrap forming method
JPS543834A (en) * 1977-06-10 1979-01-12 Mitsubishi Heavy Ind Ltd Rotary kiln equipped with preheater
JPS5623368A (en) * 1979-08-01 1981-03-05 Sumitomo Light Metal Ind Ltd Improved casting method and apparatus for copper alloy

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB803314A (en) * 1956-03-02 1958-10-22 Clang Ltd Improvements in snap action electric switches
US3196220A (en) * 1961-08-22 1965-07-20 Cutler Hammer Inc Three position electric switch with aligned contact bearing surfaces
US3482067A (en) * 1967-05-12 1969-12-02 Texas Instruments Inc Three-circuit snap-acting toggle switch

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1210220A (en) * 1967-02-20 1970-10-28 Lucas Industries Ltd Electrical switches

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB803314A (en) * 1956-03-02 1958-10-22 Clang Ltd Improvements in snap action electric switches
US3196220A (en) * 1961-08-22 1965-07-20 Cutler Hammer Inc Three position electric switch with aligned contact bearing surfaces
US3482067A (en) * 1967-05-12 1969-12-02 Texas Instruments Inc Three-circuit snap-acting toggle switch

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022999A (en) * 1975-10-07 1977-05-10 Cutler-Hammer, Inc. Plural-circuit progressive switch

Also Published As

Publication number Publication date
DE2314438A1 (de) 1973-10-04
FR2177961B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-11-05
JPS557644B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1980-02-27
FR2177961A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1973-11-09
JPS497774A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-01-23
GB1418662A (en) 1975-12-24

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